for radial flow machines or engines

for radial flow machines or engines · Cooperative Patent Classification (CPC)

Engines, pumps, lighting, heating, and mechanical systems.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeF01D9/045
Official title{for radial flow machines or engines}
Display labelfor radial flow machines or engines
Total patents166

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
20159
201615
201713
201822
201918
202022
202117
202214
202314
202411
202511

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC F01D9/045?
CPC F01D9/045 is the Cooperative Patent Classification code for “for radial flow machines or engines.”
How many patents are filed under CPC F01D9/045 (for radial flow machines or engines)?
Our database includes 166 publications tagged with this CPC code.
Is patent activity under CPC F01D9/045 growing?
Publication counts under this code: 11 in 2024 vs 11 in 2025 (latest complete years).